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- W4285586104 abstract "HARMONI is the first light visible and near-IR integral field spectrograph for the ELT. To achieve its optimal image quality, an accurate measurement of the telescope’s pointing error is necessary. These measurements are affected both by systematic and random error contributions. To characterise the impact of the latter (as well as the performance of any necessary corrective model), simulations of the pointing error measurement process are required. We introduce harmoni-pm: a Python-based prototype which, departing from a geometric optics modelisation of the instrument, attempts to reproduce the main drivers of the instrumental pointing error. harmoni-pm features a software architecture that is resilient to instrument model refinements and enables performance analyses of corrective models based on simulated calibrations. Results showed that the relay optics are the main drivers of the instrumental pointing error (order 100 μm). Additionally, simulated calibrations of corrective models based on truncated Zernike expansions can compensate for systematic pointing errors up to a residual of order 1 μm." @default.
- W4285586104 created "2022-07-16" @default.
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- W4285586104 date "2022-08-29" @default.
- W4285586104 modified "2023-09-23" @default.
- W4285586104 title "HARMONI at ELT: an evolvable software architecture for the instrument pointing model" @default.
- W4285586104 doi "https://doi.org/10.1117/12.2629016" @default.
- W4285586104 hasPublicationYear "2022" @default.
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